If scientists are genetically altering animals to create milk for a different species, is that even ethical, let alone sensible?
如果科学家改变动物的基因从而为其他的物种制造奶乳,这是不是太不合理,甚至太不道德了?
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Thus we see that every different species of sensible creatures has its different notions of beauty, and that each of them is most affected with the beauties of its own kind.